She looks very sweet. A lot of times cats do bond with one specific family member - a friend's toddler daughter is BFF with their tuxie kitty and she has some sweet photos of them together.

Tippy's curious habit is called pica. Sometimes it develops with cats who have been weaned too early, and sometimes it indicates a medical problem. If she's always checked out fine at the vet, then the best thing you can do is just keep blankets, sweaters, socks and anything else she likes to eat away from her. It's sort of an OCD.